effervesce

UK: /ˌɛfəˈvɛs/ US: /ˌɛfɚˈvɛs/ ,(ef′ər ves′)

Inflections of 'effervesce' (v): (⇒ conjugate)

effervesces

v 3rd person singular

effervescing

v pres p

efferversced

v past

effervesced

v past p

WordReference Random House Learner's Dictionary of American English © 2025

ef•fer•vesce /ˌɛfɚˈvɛs/   v. [no object] , -vesced, -vesc•ing. 

1. to give off bubbles of gas, such as a carbonated liquid.
2. to show enthusiasm, excitement, or liveliness.

ef•fer•ves•cence, n. [uncountable]
ef•fer•ves•cent, adj. 

WordReference Random House Unabridged Dictionary of American English © 2025

ef•fer•vesce  (ef′ər ves′), v.i., -vesced, -vesc•ing. 

1. to give off bubbles of gas, as fermenting liquors.
2. to issue forth in bubbles.
3. to show enthusiasm, excitement, liveliness, etc.:
   The parents effervesced with pride over their new baby.

• Latin effervēscere, equivalent. to ef- ef- + ferv- hot (see fervent) + -ēscere -esce
• 1695–1705

ef′fer•ves′cence, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

effervesce / ˌɛfəˈvɛs/ verb (intransitive)

1. (of a liquid) to give off bubbles of gas
2. (of a gas) to issue in bubbles from a liquid
3. to exhibit great excitement, vivacity, etc

Etymology: 18th Century: from Latin effervescere to foam up, from fervescere to begin to boil, from fervēre to boil, ferment

ˌefferˈvescingly adverb